Bituminous product and process of making the same



and State of Illinois,

HAROLD B; PULLAR, OF LAWRENCEVILLE, ILLINOIS.

BITUMINOUS PRODUCT AND PROCESS OF MAKING THE SAME.

No Drawing.

To all whom it may concern:

Be it known that I, HAROLD B. PULLAR, a citizen of the United States, residing in the city of Lawrenceville, county of Lawrence, have invented certain new and useful Improvements in Bituminous Products and Processes of Making Same, of which the following is a specificatlon.

My invention relates to an improvement in bituminous products and relates more particularly to a product adaptable to numerous and varied uses such as a base for paint and varnish, as a special compound for producing high grade roofing cement; for waterproofin purposes, as a substitute for certain ru ber products and innumerable other uses Where a high grade bituminous product of a rubberslike and flexible nature is desirable.

Among its salient objects are to provide a special bituminous composition of a rubber like nature having a high melting point and one which is affected but little by extremes of temperature; to provide a cheap and improved substitute for stearine, cottonseed oil and other similar pitches which is more uni form in character, more constant in its conmelting point or softening point of between 160 F. and 230 F., but, from the disclosures herein made, the principles of my invention are capableof application to various other 1 improvements than those described, but in order to get a product of satisfactory quality for commercial use, it is necessary to adhere strictly to the above proportions, and it is also possible to produce and get the same results by the addition of the proper amount of gilsonite or similar hard bitumen.

In the production of the bitumen com pound as described in myinvention it is possible to use any grade of cottonseed oil Specification of Letters Patent.

Patented Mar. 14, 1922.

Application filed May 3, 1920. Serial No. 378,404.

or stearine pitch, and it is not essential that these pitches be of uniform quality.

In order to obtain the best results the residuum oil is first placed in a kettle and heated to a temperature between 300 and 350 F. The pitch is then placed in a kettle and allowed to slowly melt and mix with the oil. If the temperatures are raised over 350 F there 1s apt to be a disintegration and separation and the results obtained as ing upon the consistency of the product desired. Approximately between 1500 to 2000 cubic feet of air per minute should be forced through a batch of 18 tons, but this is not essential as the time of completing a batch depends upon the quantity of air forced through it and temperature of the mixture.

I claim as my invention:

1. A product, comprising a mixture of a vegetable pitch and oxidized residuum oil.

2. A mixture of stearine pitch and residuum oil oxidized with air and having added to it not more than 30% of a natural asphalt as 'lsonite.

3. A pro uct comprising in substantially equal parts vegetable pitch and oxidized residuum oil, said product having a melting point between 160 and '230 degrees F.

4. An oxidized product consisting of nonmineral pitchy material, oxidized residuum and gilsonite.

5. A product comprising a mixture of oxidized heavy oil and non-mineral pitch.

6. A mixture of a non-mineral. pitch and petroleum oil oxidized and havingadded to it natural asphalt.

7. A product comprising a mixture of oxidized residuum .oil and non-mineral pitchy substance in approximately equal quantities, said product having a melting point of not less than 160 degrees F.

8. A product comprising a mixture of non-mineral pitch, oxidized mineral 011 and a natural asphalt, said product having a melting point of not less than 160 degrees F.

HAROLD B. PULLAR. 

